Messages in this thread | | | Subject | Re: [PATCH] arm: fix a migrating irq bug when hotplug cpu | From | Marc Zyngier <> | Date | Thu, 10 Jan 2019 12:56:11 +0000 |
| |
On 10/01/2019 10:09, Dietmar Eggemann wrote: > Arm TC2 fails cpu hotplug stress test. > > This issue was tracked down to a missing copy of the new affinity > cpumask for the vexpress-spc interrupt into struct > irq_common_data.affinity when the interrupt is migrated in > migrate_one_irq(). > > Fix it by replacing the arm specific hotplug cpu migration with the > generic irq code. > > This is the counterpart implementation to commit 217d453d473c ("arm64: > fix a migrating irq bug when hotplug cpu"). > > Tested with cpu hotplug stress test on Arm TC2 (multi_v7_defconfig plus > CONFIG_ARM_BIG_LITTLE_CPUFREQ=y and CONFIG_ARM_VEXPRESS_SPC_CPUFREQ=y). > The vexpress-spc interrupt (irq=22) on this board is affine to CPU0. > Its affinity cpumask now changes correctly e.g. from 0 to 1-4 when > CPU0 is hotplugged out. > > Suggested-by: Marc Zyngier <marc.zyngier@arm.com> > Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
M. -- Jazz is not dead. It just smells funny...
| |